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mcpp 2026.9.26.1 as the measured client, and the graph's own Linux ta… #1392

Job	Run time
select	14s
graphics install: no side effects on unrelated members	3m 21s
lint	27s
workspace (macos default 0/1)	57s
mirror-cn-reachable	30s
workspace (windows default 0/1)	1m 7s
workspace (linux llvm 2/4)	2m 0s
workspace (linux llvm 1/4)	1m 44s
workspace (linux llvm 0/4)	2m 47s
workspace (linux default 0/1)	1m 58s
workspace (linux llvm 3/4)	1m 50s
timings	8s
full sweep failed — open an issue	-1s
	17m 2s